, benning your legs like that, and with the concussion, one of the things she was told was to rest. not easy for her to do, i can tell you for a fact. that may be part of the inactivity. >> and we don't know what the cause is. back in 1998, it was deep vain thrombosis. >> dvt, a clot in one of the leg veins, in and of itself, not a problem, but it can break off and go to the lungs, called a pulmonary embolism, she is on blood thinners, and you treat the brain clot. this is within one of the blood vessels in her legs. they haven't told us. >> what do they do about this? once you have had an episode of dvt, what's the treatment? >> blood thinners, you want to tip the balance a little bit so you are more likely to break up the clot. the downside, rumor likely to bleed if you injure yourself. it's a careful balance and that's the monitoring in the hospital right now. >> i heard people say if you travel a lot you should take the low-dose aspirin is that true? >> baby aspirin. a lot of people take it for all sorts of reasons. >> i like the flavor. >> orange. >> orange flavor. >> and it will keep y